Shigellosis
Shigellosis is a virulent bacterial disease that is caused by a strain of bacteria of the genus Shigella
“Diarrheal outbreak due to shigella occurs in areas of overcrowding where sanitation is poor such as jails, mental hospitals, refugee camps, daycare or in primary schools. Outbreaks are also reported among homosexuals.”http://www.medindia.net/patients/patientinfo/Shigellosis.htm